Implement 'Select All' kanji feature

[jensechu]

Users have requested the option to select ALL of the kanji in a given category, or WaniKani level.

[ishbir]

I'm also planning to work on this in the next few days.

[jensechu]

Awesome @ishbir! 🍻

[SandhyaGanesh]

That'd be really helpful :')